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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.content.pm.cts;
     18 
     19 import android.content.pm.ApplicationInfo;
     20 import android.content.pm.PackageManager;
     21 import android.content.pm.ApplicationInfo.DisplayNameComparator;
     22 import android.content.pm.PackageManager.NameNotFoundException;
     23 import android.test.AndroidTestCase;
     24 
     25 /**
     26  * Test {@link DisplayNameComparator}.
     27  */
     28 public class ApplicationInfo_DisplayNameComparatorTest extends AndroidTestCase {
     29     private static final String PACKAGE_NAME = "android.content.cts";
     30     DisplayNameComparator mDisplayNameComparator;
     31 
     32     @Override
     33     protected void setUp() throws Exception {
     34         super.setUp();
     35         mDisplayNameComparator = null;
     36     }
     37 
     38     public void testConstructor() {
     39         PackageManager pm = getContext().getPackageManager();
     40         new DisplayNameComparator(pm);
     41 
     42         new DisplayNameComparator(null);
     43     }
     44 
     45     public void testCompare() throws NameNotFoundException {
     46         PackageManager pm = getContext().getPackageManager();
     47         mDisplayNameComparator = new ApplicationInfo.DisplayNameComparator(pm);
     48 
     49         ApplicationInfo info1 = new ApplicationInfo();
     50         ApplicationInfo info2 = new ApplicationInfo();
     51         info1.packageName = PACKAGE_NAME;
     52         info2.packageName = PACKAGE_NAME;
     53         assertEquals(0, mDisplayNameComparator.compare(info1, info2));
     54 
     55         info1 = mContext.getPackageManager().getApplicationInfo(PACKAGE_NAME, 0);
     56         info2.packageName = PACKAGE_NAME + ".2";
     57         assertTrue((mDisplayNameComparator.compare(info1, info2) < 0));
     58 
     59         info1 = new ApplicationInfo();
     60         info1.packageName = PACKAGE_NAME + ".1";
     61         info2 = mContext.getPackageManager().getApplicationInfo(PACKAGE_NAME, 0);
     62         assertTrue((mDisplayNameComparator.compare(info1, info2) > 0));
     63 
     64         try {
     65             mDisplayNameComparator.compare(null, null);
     66             fail("should throw NullPointerException.");
     67         } catch (NullPointerException e) {
     68             // expected
     69         }
     70     }
     71 }
     72